html,
body {
    margin: 0;
    padding: 0;
}

.container {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

section {
    flex: 1;
    overflow: hidden;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

input {
    background: none;
    outline: none;
    border: none;
}

input:focus {
    border: none;
}